Etching-machine.



6'. A. TEITS.

ETCHING'MACHINE.

APPLICATION man NOV. 7, 1915.-

Patented ul 17, 1917.

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CHESTER A. 'IEITS, or AKRON, onro.

ETCHIN G-MACHIN E.

Application filed November 7, 1916.

To all whom it may concern:

Be it known that I, CHESTER A. TErrs, a citizen of the United States, residing at Akron, in the county of Summit and State of Uhio, have invented certain new and useful Improvements in Etching-Machines, of which the following is a specification.

This invention relates to new and useful which air will be employed for forcing the acid upon the plate within the tank, thereby causing a rapid and even action of the acid upon the plate, a suitable hood being providsd for carrying away the fumes from the 2101 The invention for a further object, contemplates the provision of an etching machine of the above stated character in which the carriage carrying the air tubes may be reciprocated upon the tank as the air is forced through the tubes and directed toward the plate resting in the bottom of the acid tank below the acid level.

A. still further object of the invention resides in the provision of an etching machine of the above stated character in which the fan employed for supplying air to the depending air tubes of the carriage is operated by the same means as employed for driving the carriage over the tank.

With these and other objects in view, as will appear as the nature of the invention is better understood, the invention consists in the novel combination and arrangement of cooperating elements hereinafter more specifically set forth, shown in the drawings and pointed out in the appended claims. a

In the accompanying drawings forming a part of this application and in which like designating characters of reference refer to corresponding parts throughout the several views.

Figure 1 is a plan View of the device with the hood removed.

Fig. 2 is a vertical longitudinal section complete with parts broken away and parts shown in elevation, and,

Fig. 3 is a detail transverse vertlcal sec- Specification of Letters Patent.

Patented lily 1'3, 191?.

Serial No. 130,004.

tion, substantially on the plane of line 38 of Fig. 2, looking in the direction indicated by the arrows.

Referring more particularly to the drawings, 1 designates the acid tank which is mounted upon a suitable support 2 carried in the corner frame members 3, which latter are preferably formed of angle iron, while the tank 1 is formed of some acid proof composition. The corner members 8 also carry a lower supporting frame 4:, upon which the base 5 is mounted to support a motor 6 and fan casing 7, which latter incloses a conventional form of air fan, upon the projecting end of the shaft 8 of which is mounted a belt wheel 9 adapted to be driven by the belt 10 from the belt wheel 11 on the,

shaft 12 of the motor 6.

An air conducting pipe 13 is extended from the fan casing7 to the air distributing pipe 14, upon the opposite ends of which are mounted the flexible pipes or hose sections 15 leading to the air distributing pipes 16 of a longitudinally reciprocable carriage which includes carriage sections 17.

The air distributing pipes 16 form one end of the distributing carriage sections 17 and are connected with the opposite ends thereof by means of the transverse air pipes 18, from which are extended the depending air discharge pipes 19, the open lower ends of which extend into the acid 20 positioned in the acid tank 1. The lower ends of the air discharged pipes 19 are spaced sufliciently above the bottom of the tank 1, how ever, to avoid the upper surface of a plate resting upon the bottom of the same, as the carriage reciprocates longitudinally. of the bers employed for fastening the adjustable carriage sections 17 in proper adjusted position With respect to one another.

Secured to the carriage base members 21 and depending from the same, upon opposite sides of the tank 1, are the bracket members 26, which are shown, as being of tri-.

angular form and in the lower corners of which, is mounted the rod 27, which is rigid with the bracket members 26 and has a depending member 28, to which is pivoted, as shown at 29, one end of the pitman arm 30, the opposite end of which is eccentrically mounted upon the disk 31. The disk '31 is mounted upon the stub shaft 32 supported in the bracket arm 83 pro ecting from one of the corner supports 3. The stub shaft 32 also carries a gear 34 adapted to be driven by a larger gear 35 mounted upon a second stub shaft 36, supported in the. depending end of the bracket arm 33.

The larger gear 35 is adapted to, be driven by the gear 37 mounted upon the main shaft 12 of the motor 6.

In order to carry. off the acid fumes, I provide a hood 38, which is mounted over the tank 1 and has a fume discharge pipe 39 extended, from the opening 40 in the uppermost portion of the inclined top 41 of said hood 38; It will therefore be seen that all fumes from the acid may be readily carried; away.

It will be apparent that uponoperation of the motor 6, they carriage will be reciprocated longitudinally upon the tank 1 with the depending or discharge pipes 19 riding over the platein the acid 20 and from end toend of said plate while at the same time the fan in the fan casings 7 is causing a discharge of air from the lower ends of the air discharge pipes 19 to agitate the acid 20 and force the same against the upper surface of the plate. I

'While the form of the invention shown and described, is what is believed to be a preferred embodiment thereof it is nevertheless to be understood that minor changes therein in, the details of construction and arrangement of parts may be resorted to within the scope of the appended claims without departing from, the spirit of the invention.

What I claim is:

1;. A machine of the character described, a receptacle, a carriage movable longitudinally of the receptacle, a plurality of horizontally. disposed tubes carried by the carriage, a plurality of vertically disposed tubes carried by the horizontally. disposed tubes and having. communication therewith, meansfor transmitting motion to the, carriageto cause the same to movelongitudinally overv the receptacle, and means for forcing air through the tubes.

2. In an etching machine a supportedreceptacle, base members movable back and forth over. the receptacle, air distributingpipes carried thereby, horizontally disposed pipes carried by the air distributing pipes and communicating with. the same, means,

8. In an etching machine, a supported receptacle, air distributing pipes movable back and forth over the receptacle, means for imparting such. motion to the air distributing pipes, a plurality of communicating pipes carried by the air distributing pipes having communication with the receptacle, vertically disposed air supply pipes communicating with the distributing pipes, and a source of air supply con'nnunicating with the last mentioned pipes.

1. In a machine of the character described a supported receptacle for containing a liquid, base members movable back and forth over the receptacle, air distributing pipes carried thereby, means connecting the air distributing pipes whereby the same may be adjusted longitudinally with respect to each other, a plurality of tubes communicating with the air distributing pipes the ends of which being adapted toibe submerged in the liquid contained in the receptacle, and means for forcing air through the pipes.

5. In an operating machine a supported receptacle, air distributing pipes opcratively connected together and movable back and forth over the receptacle, communicating tubes carried by the air distributing pipes and having communication with the receptacle, vertically extending air supply pipes communicating with the distributing pipes, a source of air supply communicating with the vertically extending pipes, brackets operatively connected with the air distributing pipes, and means operatively connected with the brackets and for imparting a back and forth motion to the air distributing pipes.

6. An etching machine comprising an acid containing tank, a supporting means for said tank, a carriage mounted on said tank andv including transverse tubes, air discharge tubes depending from said transverse tubes and extending into the acid in said tank, means for moving said carriage over said tank, means for forcing air into said carriage and discharging the same from said depending tubes, flexible connections between said last mentioned means and said carriage, a motor for driving the last mentioned means and the carriage moving means, and an acid fume discharge hood mounted over said tank.

7. An etching machine comprising an acid containing tank, a supporting frame for said tank, a carriage mounted upon said tank and including base members movable on the sides of said tank, carriage sections supported upon said base members, means for securing said carriage sections in ad justed position with respect to one another, said carriage sections including depending air discharge tubes extending into the acid in said. tank, air supplying means for said carriage, flexible connections between said last mentioned means and said carriage, a

holder, connections between said holder and said air supplying means, driving connections between said holder and said carriage, and a hood for said tank.

8-. A machine of the character described comprising a, receptacle for containing liquid, a carriage reciprocable above the rec'eptacle means for imparting such motion to the carriage, a plurality of communicating horizontal tubes carried by the carriage, vertical tubes communicating with the horizontal tubes and extending within the receptacle, and means for forcing a fluid through the tubes whereby to agitate the liquidcontained in the receptacle. 15 In testimony whereof I ai'fix my signature in presence of two witnesses.

CHESTER A. TEITS.

Copies of. this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

